There’s no single official Warhammer 40k books reading order, and that trips up a lot of new readers. The setting is a web of connected series, standalones, and faction arcs, not one continuous story. The practical fix is to pick an entry-point series, read it in publication order, then branch out.
Why there’s no master list
Games Workshop has never published one unified chronology for its fiction, and most books don’t come with firm dates. Trying to force 400+ novels into a single timeline is a losing game.
So the useful approach is reading by series and story arc, usually in publication order within each series. That keeps things manageable without pretending there’s a canon spreadsheet somewhere.
Best entry points for new readers
Five series get recommended over and over because they ease you into the setting without expecting prior knowledge. Each one works as a self-contained starting point.
Dan Abnett’s Eisenhorn arc is the most common first pick. It follows an Inquisitor through investigations that naturally reveal the Imperium’s scope, its moral grey zones, and what Chaos actually means in daily life. You learn the tone of 40k by watching someone live inside it.
- Inquisitor (Eisenhorn, then Ravenor, then Bequin) by Dan Abnett: investigations that teach you the setting as you go.
- Ciaphas Cain by Sandy Mitchell: lighter, funnier, a good palate cleanser between grim arcs.
- Gaunt’s Ghosts by Dan Abnett: military campaign fiction following one regiment.
- Ultramarines by Graham McNeill: Space Marine action with a clear through-line.
- Iron Warriors by Graham McNeill: the traitor Legions’ perspective.
The Horus Heresy is optional
The Horus Heresy sits roughly 10,000 years before the main 40k setting. It’s a prequel era, not a prerequisite. Plenty of readers start with 40k proper and come back to the Heresy later.
If you do want that background, treat it as its own reading project with its own order. Don’t try to interleave it with your first 40k series.
Following the modern timeline
If you want the post-Great Rift story, the spine runs from the Fall of Cadia and Guilliman’s return through the Indomitus Crusade, the Dark Imperium trilogy, and beyond. Chris Wraight’s Vaults of Terra and Watchers of the Throne series overlap heavily and cover the Terra side of things.
Black Library eventually printed its own chronological appendix in Dawn of Fire: The Silent King, which places the Dark Imperium trilogy after the first phase of the Indomitus Crusade. Fan guides mostly agree with that placement now, though the Blood Angels and Imperium Nihilus material still doesn’t line up cleanly.
One quirk worth knowing: The Devastation of Baal appears twice on some lists because Warp time shenanigans stretch its events across a wide span.
Key facts
- There’s no single official Warhammer 40k books reading order; Games Workshop has never published one.
- The practical approach is to pick an entry series, read it in publication order, then branch out by faction or arc.
- Eisenhorn, Ciaphas Cain, Gaunt’s Ghosts, Ultramarines, and Iron Warriors are the most-recommended starting series.
- The Horus Heresy is a separate prequel era set roughly 10,000 years earlier and isn’t required reading.
- Black Library’s Dawn of Fire: The Silent King includes an official chronological appendix for the modern timeline.
FAQ
Do I need to read the Horus Heresy before Warhammer 40k books?
No. The Horus Heresy is a prequel era set about 10,000 years earlier. It adds background, but you can start with any 40k entry series and come back to it later.
What’s the best first Warhammer 40k novel?
Eisenhorn by Dan Abnett is the most commonly recommended starting point. It introduces the Imperium, the Inquisition, and Chaos through a self-contained investigation story.
Is there an official reading order from Black Library?
Not a full one. Black Library included a chronological appendix in Dawn of Fire: The Silent King covering the modern era, but there’s no official master list for every 40k book.